EP 0362424 B1 19920415 - CASING DRIVER
Title (en)
CASING DRIVER
Publication
Application
Priority
EP 88116464 A 19881005
Abstract (en)
[origin: EP0362424A1] The apparatus comprises a casing insertion hole (12) having a tapered surface convergent (13) towards the casing and formed in a rotational body (6) that is rotatably supported on a thrust frame (4) of a casing driver. Wedge-shaped chuck members, (17),which slide on the tapered surfaces to be pushed between the rotational body (6) and casing to chuck the casing, are rotatably supported by chuck cylinders (21) provided on the thrust frame (4). Therefore, the casing can be rotated in chucked manner without rotating the chuck cylinders (21).
IPC 1-7
IPC 8 full level
E02D 7/20 (2006.01)
CPC (source: EP)
E02D 7/20 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0362424 A1 19900411; EP 0362424 B1 19920415; AT E74984 T1 19920515; DE 3870237 D1 19920521; ES 2030486 T3 19921101; GR 3004916 T3 19930428
DOCDB simple family (application)
EP 88116464 A 19881005; AT 88116464 T 19881005; DE 3870237 T 19881005; ES 88116464 T 19881005; GR 920400307 T 19920612